WO2020056612A1 - Sonde de mesure de température corporelle, dispositif de mesure de température corporelle et procédé de mesure de température corporelle - Google Patents

Sonde de mesure de température corporelle, dispositif de mesure de température corporelle et procédé de mesure de température corporelle Download PDF

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Publication number
WO2020056612A1
WO2020056612A1 PCT/CN2018/106344 CN2018106344W WO2020056612A1 WO 2020056612 A1 WO2020056612 A1 WO 2020056612A1 CN 2018106344 W CN2018106344 W CN 2018106344W WO 2020056612 A1 WO2020056612 A1 WO 2020056612A1
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WO
WIPO (PCT)
Prior art keywords
body temperature
temperature sensor
probe
temperature
heating component
Prior art date
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Ceased
Application number
PCT/CN2018/106344
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English (en)
Chinese (zh)
Inventor
叶继伦
张旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHEN ZHEN UNIVERSITY
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SHEN ZHEN UNIVERSITY
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Publication date
Application filed by SHEN ZHEN UNIVERSITY filed Critical SHEN ZHEN UNIVERSITY
Priority to US17/276,588 priority Critical patent/US12285238B2/en
Priority to PCT/CN2018/106344 priority patent/WO2020056612A1/fr
Publication of WO2020056612A1 publication Critical patent/WO2020056612A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
    • G01K1/18—Special arrangements for conducting heat from the object to the sensitive element for reducing thermal inertia
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/20—Clinical contact thermometers for use with humans or animals

Definitions

  • the invention relates to the technical field of medical equipment, in particular to a body temperature measuring probe, a body temperature measuring device and a body temperature measuring method.
  • body temperature is one of the key human parameters; in multi-parameter monitors and various types of thermometers, temperature measurement probes, temperature measurement devices, and temperature measurement methods are involved.
  • the body temperature measurement in the prior art usually uses temperature sensors such as thermistors and pyroelectric sensors for body temperature sensing.
  • the body temperature measuring device using the infrared pyroelectric sensor has a short thermal equilibrium time, and can realize wireless or non-contact measurement, but the measurement error is large.
  • a body temperature measuring device using a thermistor In a body temperature measuring device using a thermistor, the thermal balance between the human body and the temperature sensor is established through contact between the temperature sensor and the human body, thereby realizing the measurement of the body temperature.
  • the temperature sensor using a thermistor monitors accurately, but requires a long thermal equilibrium time.
  • the temperature measuring probe is usually arranged at the end of the cable between the host of the monitor or the body of the thermometer. It is troublesome to prevent cross interference and needs to be disinfected as a whole.
  • a contact type temperature measuring device using a thermistor Will increase the disposable protection of the sleeve, which can avoid cross infection and avoid repeated disinfection of the entire cable, but the sleeve further increases the time to establish thermal equilibrium during the measurement process, resulting in an increase in measurement time; and Inconsistencies also increase measurement bias and affect measurement accuracy.
  • the average normal temperature of the human body is between 36 and 37 ° C. It is not easy to achieve a balance between high accuracy and rapid measurement.
  • the temperature sensor in order to achieve faster body temperature measurement, the temperature sensor has a warm-up process during the measurement process. Preheating the temperature sensor to the normal temperature range close to the human body, avoiding the process of the temperature sensor adjusting from the ambient temperature to the target measurement range, making the subsequent measurement process faster and more accurate.
  • the technical problem to be solved by the present invention is to avoid the shortcomings of the above technical solutions, and a body temperature measuring probe, device and method capable of quickly establishing thermal balance are proposed.
  • the technical solution adopted by the present invention to solve the technical problem is a body temperature measuring probe, which includes a temperature sensor for sensing temperature, a heating component for preheating control of the temperature sensor, and a position control component for position control of the heating component;
  • the position control component is connected to a heating component; the position control component controls contact or separation between the heating component and the temperature sensor.
  • the body temperature measuring probe further includes a probe housing made of a thermally conductive material; the probe housing is covered with a temperature sensor, a heating component, and a position control component.
  • the body temperature measuring probe further includes a probe interface for the body temperature measuring probe and an external connection; the probe interface includes a mechanical interface for fixed connection of the probe and an external cable and an electrical interface for electrical connection between the probe and the outside.
  • the temperature sensor is a thermistor.
  • the position control component is an electromagnetic stroke control component.
  • the electromagnetic stroke control component includes an electromagnetic coil and a moving shaft. One end of the moving shaft is fixedly connected to the heating component.
  • the electromagnetic coil generates an electromagnetic field through a current in the coil, and the magnetic force of the electromagnetic field acts on the electromagnetic field.
  • the moving shaft drives the heating component to move, so as to achieve contact or separation between the heating component and the temperature sensor.
  • the shape of the probe housing includes any one of a hemispherical shape, a semi-ellipsoidal shape, a conical shape, and a cylindrical shape.
  • the technical solution adopted by the present invention to solve the technical problem may also be a body temperature measuring device including the body temperature measuring probe, the body temperature measuring device includes an analog signal processing module, a first driving module for driving a temperature sensor, and A heating driving module driven by a heating component, a second driving module for driving a position control component, and a main control module for controlling a body temperature measuring device;
  • the body temperature measuring probe includes a probe interface for connecting the body temperature measuring probe to the outside;
  • the probe interface includes an electrical interface for electrically connecting the probe to the outside;
  • the first drive module is electrically connected to the temperature sensor through the electrical interface to provide driving for the temperature sensor;
  • the main control module is electrically connected to the heating drive module to heat drive
  • the module is electrically connected to the heating component through an electrical interface;
  • the main control module is electrically connected to a second drive module, and the second drive module is electrically connected to the position control component through an electrical interface.
  • the temperature sensor in the body temperature measurement probe is a thermistor; it further includes a calibration device for improving the consistency of the thermistor in the body temperature measurement probe; the calibration device includes a calibration resistor controlled by the main control module.
  • the technical solution adopted by the present invention to solve the technical problem may also be a body temperature measurement method based on the body temperature measuring probe, including: step 100: activating a temperature sensor; step 200: preheating the body temperature measuring probe to a preset temperature Step 300: After the temperature measuring probe is preheated to a preset temperature range, the heating component and the temperature sensor are separated, and only the temperature sensor is involved in the thermal balance process of the temperature measurement. Step 400: The temperature sensor works to obtain the temperature measurement data.
  • step 100 the initial temperature value is measured and obtained after the temperature sensor is started.
  • the step 200 includes the following sub-steps: Step 210: determine whether the initial temperature value obtained in step 100 is within a preset temperature range; If the initial temperature value is less than the lower limit of the preset temperature range, proceed to step 230; if the initial temperature value is greater than or equal to the upper limit of the preset temperature range, proceed to step 250; step 230: start the heating component; step 250: turn off the heating component.
  • step 230 before starting the heating component, the method further includes the following steps: step 231: judging the connection status between the heating component and the temperature sensor; step 233: starting the heating component if the heating component and the temperature sensor are in a contact state. Step 235: If the heating component and the temperature sensor are in a separated state, control the movement of the heating component through the position control component, bring the heating component into contact with the temperature sensor, and then start the heating component.
  • the beneficial effect of the present invention is that the connection state between the heating component and the temperature sensor is controlled by the position control component.
  • the heating component can participate in the preheating process of the temperature sensor, and the preheating is completed. It can be separated from the temperature sensor afterwards and does not participate in the subsequent measurement process of the temperature sensor, so that the temperature sensor can quickly reach a thermal equilibrium with the measured target, shortening the time to reach the thermal balance between the temperature sensor and the measured target, which can be further faster. Achieve high-precision body temperature measurement.
  • Figure 1 is one of the structural schematic diagrams of a body temperature measuring probe
  • FIG. 2 and 3 are structural schematic diagrams of a body temperature measuring probe (No. 2).
  • the heating assembly 20 and the temperature sensor 10 are in a separated state; in FIG. 3, the heating assembly 20 and the temperature sensor 10 are in a contact state;
  • FIG. 4 is a schematic block diagram of a body temperature measuring device
  • FIG. 5 is a schematic flowchart of a preferred embodiment of a body temperature measurement method.
  • An embodiment of a body temperature measuring probe as shown in FIGS. 1 and 2 includes a temperature sensor 10 for sensing temperature, a heating component 20 for preheating control of the temperature sensor, and a position control component for position control of the heating component. 30; the position control component is connected to the heating component; the position control component controls contact or separation between the heating component and the temperature sensor.
  • An embodiment of the body temperature measuring probe shown in FIGS. 1 and 2 further includes a probe housing 50 made of a thermally conductive material; the probe housing is covered with a temperature sensor 10, a heating component 20, and a position control component 30.
  • the probe housing made of thermally conductive material further accelerates the thermal equilibrium process in temperature measurement, so it will also shorten the measurement time and better achieve rapid temperature measurement.
  • the embodiment of a body temperature measuring probe shown in FIGS. 1 and 2 further includes a probe interface 60 for the body temperature measuring probe and an external connection, and the probe interface 60 is used for an external cable interface 70 and an external cable 80 Make mechanical and electrical connections.
  • the probe interface 60 includes a mechanical interface for fixed connection of a body temperature measuring probe and an external cable.
  • the probe interface includes a mechanical interface for fixed connection of the probe and an external cable, and an electrical interface for electrical connection between the probe and an external electrical connection.
  • the electrical interface between the body temperature measuring probe and the external electrical connection includes at least three electrical signal connection terminals, which are respectively used for transmitting the temperature sensor driving signal, the heating component driving signal and the position control component driving signal.
  • the electrical interface of the body temperature measuring probe includes 5 electrical contacts including Rt, Rd, Rf and two GND.
  • the electrical interface of the body temperature measuring probe includes Rt, Rd, Rf, Rn and There are 5 electrical contacts in one GND; the electrical interface realizes the electrical connection between the temperature measurement probe and the main measurement system.
  • the electrical interface realizes the electrical connection between the body temperature measuring probe and the main measurement system.
  • the main measurement system may be a body temperature measurement device including a monitor, a thermometer, and the like.
  • the body temperature measuring probe is covered by a probe housing, and mechanical and electrical connections are made to the outside through the probe interface. It is very convenient to replace the body temperature measuring probe as a whole, and the heat conducting material of the probe housing is made of stainless steel or Made of other materials with good thermal conductivity and convenient sterilization, the individual body temperature measuring probes can be easily removed and sterilized separately, without the need to sterilize the entire thermometer or the measured cable connection line or main equipment.
  • the casing directly covers the temperature sensor, and the body temperature measuring probe realizes the rapid temperature measurement by directly contacting the human body.
  • the movable connection between the heating component and the temperature sensor enables necessary contact and separation, so that during the rapid body temperature measurement process, only the temperature sensor participates in the thermal equilibrium process of the temperature measurement in the latter stage. Because the heating assembly does not participate in the heat exchange process in the final stage, the time required to reach thermal equilibrium is greatly shortened, and the problem of long time for rapid body temperature measurement in the prior art is solved.
  • the structure of the probe can be independently sterilized, which eliminates the sheath used in the prior art temperature measurement probe, which makes the temperature sensor of the temperature measurement probe contact the human body more directly, the contact area is larger, and the periphery of the temperature sensor of the thermistor is Covered by a semi-circular stainless steel with excellent lead-in as the probe housing, the measurement results are more accurate; because a sheath is not needed, the rapid temperature measurement in the prior art is also solved, and the measurement deviation due to inconsistent sheaths is further improved. The accuracy of the measurement also avoids the environmental pollution of the disposable sheath.
  • the temperature sensor is a thermistor-type temperature measurement device.
  • the heating component is used to accelerate the compensation of the difference between the temperature measurement device and the temperature to be measured.
  • the position control component can control the contact between the heating component and the temperature sensor or When separated, the heating component 20 and the temperature sensor 10 are in a contact state in FIG. 3, and the heating component 20 and the temperature sensor 10 are in a separated state in FIG. 2.
  • the heating component is driven by DC, and the heating component and the position control component are fixedly connected;
  • the position control component is an electromagnetic stroke control component, which includes an electromagnetic coil and a moving shaft, and one end of the moving shaft is fixedly connected to the heating component; when heating is required , Then it is driven by the electromagnetic travel device to make the heating component contact the thermistor and heat the thermistor part to the expected 35 °C +/- 0.5 °C or other set temperature range; when the thermistor is heated to the expected temperature Within the range, when the heating is stopped, the heating component is released from contact with the thermistor by the electromagnetic travel device. Only the thermistor participates in the temperature exchange process of contacting the human body for temperature measurement, avoiding the heating device also participating in the temperature exchange. During the process, the overall temperature rise heat capacity of the body temperature measuring probe is reduced.
  • the body temperature measuring device includes an analog signal processing module, a first driving module for driving a temperature sensor, a heating driving module for driving a heating component, and A second drive module driven by the position control component and a main control module for controlling the body temperature measuring device;
  • the body temperature measuring probe includes a body interface for the body temperature measuring probe and an external connection;
  • the body interface includes a body interface for the body Connected electrical interface;
  • the first drive module is electrically connected to the temperature sensor through the electrical interface to provide driving for the temperature sensor.
  • the first drive module is shown as a constant current drive module in FIG.
  • the main control module and the heating drive module Electrical connection, the heating drive module is electrically connected to the heating component through an electrical interface; the main control module is electrically connected to the second drive module, the second drive module is electrically connected to the position control component through an electrical interface, and the second drive module is shown in FIG. 4 Shown as a stroke drive module.
  • the heating drive module can be based on the main control module's PWM pins, I / O interface and its corresponding CMOS tube and other circuit components, and through the software algorithm in the main control module to achieve a preheat function for rapid body temperature measurement.
  • the heating component can adopt a resistance or a thermally conductive film, and realize the heating process control through the PWM control of the main control module.
  • the second driving module for driving the position control component may be based on the PWM pin, the I / O interface of the main control module and its corresponding CMOS tube to realize the control of the position control component.
  • the position control component is an electromagnetic stroke component.
  • the electromagnetic stroke component includes an electromagnetic coil 31 and a moving shaft 32. One end of the moving shaft 32 is fixedly connected to the heating component.
  • the electromagnetic coil generates an electromagnetic field through the current in the coil, and the magnetic force of the electromagnetic field acts on the movement.
  • a shaft drives the heating component to move, so as to achieve contact or separation between the heating component and the temperature sensor.
  • the moving shaft 32 can be a spring.
  • the electromagnetic component realizes a 2-5mm stroke change by the electromagnetic force of the electromagnetic field to achieve the contact and separation of the heating part and the measuring part, and reduces the heat capacity of the components involved in the subsequent temperature measurement and heat exchange. Only the temperature sensor and The housing that covers the temperature sensor participates in the heat exchange process at other stages after the warm-up stage.
  • the analog signal processing module includes an analog amplification and filtering processing module and an analog-to-digital conversion module to implement the amplification, filtering, and digitization of the analog signal output by the temperature sensor, and the digitized temperature
  • the signal is input to the main control module for subsequent calculations.
  • the main control module includes micro processing and related circuits.
  • the main control module includes a microprocessor, which is a software and related algorithm running platform; the body temperature measuring device may also include a necessary power display module and the like.
  • the power display module includes a power supply for powering the device and a display for human-computer interaction and temperature measurement data display.
  • the body temperature measuring device can also be divided into a temperature measuring module, a heating and travel control module, a main control module and a power display module.
  • the temperature measurement module includes an analog amplification and filtering module, an analog-to-digital conversion module, and a constant current drive module of a temperature sensor; the temperature measurement module and software algorithms in the main control module cooperate to achieve rapid body temperature measurement.
  • Step 100 start the temperature sensor and start measuring to obtain the initial temperature value
  • Step 200 Preheat the temperature measuring probe to a preset temperature range
  • Step 300 After the body temperature measuring probe is preheated to a preset temperature range, the heating component is separated from the temperature sensor, and only the temperature sensor is involved in the heat balance process of the body temperature measurement to obtain body temperature measurement data.
  • the step 200 includes the following sub-steps: Step 210: determine whether the initial temperature value obtained in step 100 is within a preset temperature range; if the initial temperature value is less than the lower limit of the preset temperature range, proceed to step 230; if the initial temperature If the value is greater than or equal to the upper limit of the preset temperature range, proceed to step 250; step 230: start the heating component; step 250: turn off the heating component.
  • step 230 before starting the heating assembly, the following steps are further included:
  • Step 231 determine the connection state between the heating component and the temperature sensor
  • Step 233 if the heating component is in contact with the temperature sensor, start the heating component
  • Step 235 If the heating component and the temperature sensor are in a separated state, control the movement of the heating component through the position control component, bring the heating component into contact with the temperature sensor, and then start the heating component.
  • Step 1 Start the measurement first
  • Step 2 Determine whether the initial temperature has reached the expected range. If it does not reach the expected range, start the heating assembly and start heating until the temperature reaches the expected range;
  • Step 3 Turn off the heating module or remove the heating module from the temperature sensor
  • Step 4 Perform a rapid body temperature prediction step and output the prediction result
  • Step 5 Determine whether the prediction result can be used in subsequent calculations. If it can be measured, proceed to step 6, otherwise return to the step of step 4 temperature prediction;
  • Step 6 Calculate the measurement results and output the measurement data.
  • the heating component can be moved. In the warm-up phase of the fast body temperature temperature sensor, the heating component and the temperature sensor directly contact to complete the warm-up process quickly. After the fast body temperature temperature sensor completes the warm-up phase, the heating component and the temperature sensor are separated. Reduce the heat capacity of the measurement part. Only the temperature sensor and the necessary shell part participate in the temperature exchange to achieve faster response time of temperature sensing.
  • the rapid body temperature measurement device and system designed by the present invention overcome the shortcomings of the existing body temperature measurement device in terms of measurement time, measurement accuracy, and environmental pollution, and improve the measurement accuracy and ease of use of the application system. It is expected that The measurement time is less than 10 seconds, and the accuracy reaches ⁇ 0.1 ° C, which reduces environmental pollution. It has excellent clinical application value. It is one of the necessary monitoring instruments for clinics, community clinics and other departments. It can completely replace imported measurement technology from the measurement function and key indicators, and can produce significant economic benefits.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne une sonde de mesure de température corporelle comprenant un capteur de température, un ensemble de chauffage et un ensemble de commande de position ; l'ensemble de commande de position commande le contact ou la séparation entre l'ensemble de chauffage et le capteur de température. Un procédé de mesure de température corporelle en fonction de la sonde de mesure de température corporelle de l'invention comprend étape 100 : le démarrage du capteur de température ; étape 200 : le préchauffage de la sonde de mesure de température corporelle à une plage de température prédéfinie ; étape 300 : une fois la sonde de mesure de température corporelle préchauffée à la plage de température prédéfinie, la séparation de l'ensemble de chauffage du capteur de température, et la participation du seul capteur de température à un processus d'équilibre thermique de la mesure de température corporelle ; étape 400 : le fonctionnement du capteur de température afin d'obtenir des données de mesure de température corporelle. Une fois le préchauffage du capteur de température achevé, l'ensemble de chauffage et le capteur de température sont séparés de telle sorte que le capteur de température peut rapidement atteindre un équilibre thermique avec une cible mesurée ; la durée de mesure est ainsi raccourcie et une mesure de température corporelle de haute précision peut être obtenue.
PCT/CN2018/106344 2018-09-18 2018-09-18 Sonde de mesure de température corporelle, dispositif de mesure de température corporelle et procédé de mesure de température corporelle Ceased WO2020056612A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/276,588 US12285238B2 (en) 2018-09-18 2018-09-18 Body temperature measuring probe, body temperature measuring device and body temperature measuring method
PCT/CN2018/106344 WO2020056612A1 (fr) 2018-09-18 2018-09-18 Sonde de mesure de température corporelle, dispositif de mesure de température corporelle et procédé de mesure de température corporelle

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PCT/CN2018/106344 WO2020056612A1 (fr) 2018-09-18 2018-09-18 Sonde de mesure de température corporelle, dispositif de mesure de température corporelle et procédé de mesure de température corporelle

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Citations (6)

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Publication number Priority date Publication date Assignee Title
JPS5280191A (en) * 1975-12-26 1977-07-05 Seiko Epson Corp Clinical thermometer
JPS59184829A (ja) * 1983-04-05 1984-10-20 Mitsubishi Heavy Ind Ltd 温度計
CN1233750A (zh) * 1998-04-30 1999-11-03 陈敬弘 一种快速测量的电子体温计
CN1391093A (zh) * 2001-06-13 2003-01-15 陈敏镛 体温计的稳温方法及其装置
US20070242726A1 (en) * 2006-04-13 2007-10-18 Richard Medero Predictive temperature probe with proximity sensor
CN206621348U (zh) * 2016-11-04 2017-11-10 广州视源电子科技股份有限公司 电子体温计

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Publication number Priority date Publication date Assignee Title
US8794829B2 (en) * 2009-12-31 2014-08-05 Welch Allyn, Inc. Temperature-measurement probe
DE102015009088B4 (de) * 2015-07-17 2022-02-03 Drägerwerk AG & Co. KGaA Messeinrichtung zur Bestimmung einer Temperatur eines Menschen, deren Verwendung und Verfahren zu deren Betrieb, sowie Wärmetherapievorrichtung mit einer solchen Messeinrichtung
WO2018033795A2 (fr) * 2016-08-19 2018-02-22 Thalman Health Ltd. Système et procédé pour le contrôle de la température profonde du corps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280191A (en) * 1975-12-26 1977-07-05 Seiko Epson Corp Clinical thermometer
JPS59184829A (ja) * 1983-04-05 1984-10-20 Mitsubishi Heavy Ind Ltd 温度計
CN1233750A (zh) * 1998-04-30 1999-11-03 陈敬弘 一种快速测量的电子体温计
CN1391093A (zh) * 2001-06-13 2003-01-15 陈敏镛 体温计的稳温方法及其装置
US20070242726A1 (en) * 2006-04-13 2007-10-18 Richard Medero Predictive temperature probe with proximity sensor
CN206621348U (zh) * 2016-11-04 2017-11-10 广州视源电子科技股份有限公司 电子体温计

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US20220039663A1 (en) 2022-02-10

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